staff.json | jq '.[][] | select(type=="array")[].name'

staff.json | jq '.[] | {name, members: [.chiefs[].name, .members[].name]} | .name + ": " + .members[]'

staff.json | jq '.[] | {name, members: [.chiefs[].name, .members[].name]} | (.name|split("-")[0]|rtrimstr(" ")) + " - " + .members[]'